diff --git a/.env b/.env
index 4094e8d..4c365d4 100644
--- a/.env
+++ b/.env
@@ -1,4 +1,5 @@
 # .env
-DATABASE_URL=postgres://milkydata:44n6FdB8CdDAk5rk@127.0.0.1:5432/milkydata
+DATABASE_URL=postgres://milkydata:44n6FdB8CdDAk5rk@154.37.213.24:5432/milkydata
 WECHAT_APPID="wx5b00eb90621802f7"
-WECHAT_SECRET="494efc513faa310bfba588bda2849bfd"
\ No newline at end of file
+WECHAT_SECRET="494efc513faa310bfba588bda2849bfd"
+JWT_SECRET="your_super_secret_key"
\ No newline at end of file
diff --git a/src/db.rs b/src/db.rs
index 275144a..533ff7f 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -1,5 +1,6 @@
-use sqlx::PgPool;
+use sqlx::{PgPool, postgres::PgPoolOptions};
 use std::env;
+use std::error::Error;
 
 // 从 models 模块引入 WeatherData 结构体
 use crate::models::WeatherData;
@@ -97,9 +98,23 @@ pub async fn insert_weather_data(pool: &PgPool, weather_data: &WeatherData) -> R
     Ok(inserted_id)
 }
 
-pub async fn create_pool() -> Result<PgPool, sqlx::Error> {
-    dotenvy::dotenv().ok();
-    let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set in .env file");
+pub async fn create_pool() -> Result<PgPool, Box<dyn Error>> {
+    // 加载环境变量，非致命错误处理
+    if let Err(e) = dotenvy::dotenv() {
+        eprintln!("警告: 无法加载.env文件 - {}", e);
+    }
 
-    PgPool::connect(&database_url).await
+    // 获取数据库URL并提供友好错误信息
+    let database_url =
+        env::var("DATABASE_URL").map_err(|_| "环境变量DATABASE_URL未设置，请在.env文件中配置")?;
+
+    // 配置连接池参数
+    let pool = PgPoolOptions::new()
+        .max_connections(20) // 根据应用需求调整最大连接数
+        .acquire_timeout(std::time::Duration::from_secs(30)) // 获取连接的超时时间
+        .connect(&database_url)
+        .await
+        .map_err(|e| format!("数据库连接失败: {}", e))?;
+
+    Ok(pool)
 }